Weight of organic substance (w) = 0.2346 g
Weight of water (x) = 0.2754 g
Weight of CO2 (y) = 0.4488 g
Percentage of carbon = \(\frac{12}{44}\) x \(\frac{y}{w}\) x 100
= \(\frac{12}{44}\) - \(\frac{0.4488}{0.2346}\) x 100 = 52.17%
Percentage of hydrogen = \(\frac{2}{18}\) x \(\frac{y}{w}\)x 100
= \(\frac{2}{18}\) x \(\frac{0.2754}{0.2346}\) x 100 = 13.04%
Percentage of oxygen = [100-(52.17+13.04)] = 100 - 65.21 = 34.79%